Positioning apparatus for headlights



Nov. 15, 1927.

J. D. GUISS POSITIONING APPARATUS FOR HEADLIGHTS Filed June 30. 1925I'll INVENTOR .2 John 17. 601.5: A BY v of companion Patented .Nov. 15,1927.

UNITED STATES 1,649,777 PATENT OFFICE.

JOHN D. GUISS, OF SEATTLE, WASHINGTON, ASSIGNOR OI ONE-HALF TO L. W.HARKINS, OF TACOMA, WASHINGTON.

POSITIONING APPARATUS FOR HEADLIGHTS.

This invention relates to apparatus for positioning the spotandheadlights of automobiles; and its object is the provision ofinexpensively constructed and conveniently adjustable apparatus of thischaracter.

' The invention consists, generally, in a pair members having indicatingmarks thereon, and in means for regulating the members to locateelevations and horizontal positions of the markings thereon predeterminately.

The invention further consists in the novel construction, adaptation,and combination of parts hereinafter described and claimed.

In the accompanying drawing,-

Figure 1 is a perspective view of apparatus embodying the presentinvention shown applied to the wall of a building; Fig. 2 is a Verticalsection taken substantially on line 2-2 of Fig. 1; and Fig. 3 is aperspective view of a portable stand upon which the positioning devicesare mountable.

In said drawing, the reference numerals 5 and 5 represent twocomplementary boards of wood or other suitable material.

As shown, these boards are of rectangular shape, disposed in overlappingrelation, are connected with each other for relative horizontal movementas by means of clips 6 and 6 Said clips are secured to the respectiveboards and have offset guiding arms 7 and 7 to afford slide-ways for thecomplementary boards. Provided upon each board are guide marks, hereinshown as a horizontal line 8 and a vertical line 9 disposed in crossedrelation with respect to each other, the horizontal lines 8 of bothboards being aligned with each other. i As shown, said boardsaresuspended from a horizontally disposed bar 10 which, in Figs. 1 and2, is represented as being rigidly secured to a wall W as by screws oran equivalent fastening means.

When it is desired, however, to use the apparatus in differentsituations said bar is secured to a portable frame such as thatillustrated in Fig. 3, the bar designated by 10 is rigidly secured tothe post members 11 of the frame which is indicated generally by 12.

The ,bar 10, as shown, is formed to provide along'itsv upper edgearidg'e 13 which is engageable in the hooked upper portions 14 ofcarriers 15, one or'more for each board.

and

for example, wherein,

Each carrier 15 is provided with a sight aperture 16 through whichmay beseen scales, or graduations, 17 and 17 (Fig. 1) provided upon the bar10.

The divisions of each of said scales are denoted by numerals as, 24;,26, 28, etc., which designate twice the distances, in inches,the-respective marks of scales are from a medial line-indicated bydotted line 0 in Fig. 1, and the actual distances betweencorrespondingly designated scale marks of both scales-for example, thescale numerals 30 upon the bar 10 will be fifteen inches from the medialline 0 and thirty inches from eachother.

Each of the carriers 15 is provided with a slot 18 to receive the loopof a flexible strap S having the end of one of its folds, as 19, securedto an attachment 20 of the respective board; the end of the other fold,21 being secure-(Mo a slide 22 which is mounted upon the respective fold19.

Provided upon each slide 22 is a clamping lever 22 for engaging therespective slide to the associated strap fold 19 to register with apredetermined scale marking of a series of graduations 23 provided uponthe strap fold 19. The graduation marks of such straps are arranged toindicate the proper regulation of the straps to suspend the boards tocause the horizontal marks thereon to be at selected elevations abovethe floor Fthat is to say, when the slides are respectively located toregister with graduations, as indicated by 40 for example, on the strapswhereupon thelatter will be adjusted to suspend the boards. at anelevation such that the lines 8 will in this instance be forty inchesabove the floor F. The stra s and the connections of the same with theoards and thecarriers 15 are such that the relative positioning of thecarriers with respect to the scale marks 17, 17 will indicate theseparation of the vertical marks 9. To verify. the correctness of thehorizontal setting of the boards, a series of scale markings 24 mayadvantageously be provided upon the rear board 5 to'be readable withrespect -to the edge 25 of the other board 5.

, The invention so far described is utilized for positioning theslant orinclination of the headlights of an automobile,.the boards 5 and 5 beinregulated in the manner above described to ocatethe lines 8 and 9 tocordoes not obtain the lamps are tiltably adjusted to cause such beam toconform to such a requirement.

For determining the vertical angular position of the spotlight ofanautomobile to "have its beam of light pass beneath a horizontal line ata predetermined distanceas thirty feet, for examplein front of thespotli ht, the lines 8 may be utilized to indicate the maximum height ofthe spot beam by suitably raising or lowerin the same through theinstrumentality of t e strap devices as hereinbefore explained.

In employing the boards for testing the spotlight beams. it is?requisite that a table or schedule of elevations of the board-marks 8with respect to the elevation of the spot-1i ht for differentautomobiles should be provi ed and which, for instance, may be in theratio of about five to six; hence, it the height ofthe focal axis of thespotlight at the car is forty-eight inches above the floor, the maximumheight of the spotlight beam at its intersection by the boards shouldbeapproximately forty inches ,9

To obviate the inconvenience of adjusting the boards vertically torregulating a. spotlight other, means are advantageously employe-d'suchfor example as a rod 26 (Fig. 1)

having at its upper end a'hook 27 which is engageable over the ridge 13-of the bar 10 said rod having thereon graduations 28 which are locatedat elevations suitable to determine proper downward slant of the beam ofa spotlight being tested, the denominating characters upon the rod beingarranged to indicate themaximum heights of the beam of light projectedthereon at the respective. gra nations in terms of the spotlightselevation on the car.

What I claim, is,

1. In apparatus of the character described,

complementary members having markings thereon and arranged for relativehorizontal movement, a rigid support including a horizontal bar.element, and adjustable devices depending from said bar element for'suspending said members to osition the markings theeron at selective eevations.

2. In apparatus of the character described, two board members havinghorizontal and vertical markings thereon, means for slidably connectingsaid members together for relative horizontal movement, means forsupporting said members to have the horizontal marks thereon atdifferent elevations selectively, said means being adjustable forregulating the members to have the vertical marks thereon at selectivedistances apart, and means for suspending said supporting means.

3. In apparatus of'the character described, complementary board membershaving markings thereon, devices for connecting ,said

members for relative adjustments, a horizontal bar member, means forsupportin said bar member in a horizontal position, an means dependingfrom said bar for supporting the board members at difierent elevationsselectively, said means comprising for each board member a carrierslrdable endwise of said bar member, an attachment for the respectiveboard, a strap engaging the carrier and the attachment, and means forregulating the eflective length of the strap.

4. In apparatus ofthe character described, complementary board membershaving markings thereon, devices for connecting said members forrelative adjustments, a hori, zontal bar member, means for supporting.said bar member in a horizontal position,

said bar being provided with graduations thereon, and means dependingfrom said bar for supporting the board members at differ ent elevationsselectively, said means comprising for each board member a carrierslidable endwise of said bar member and with respect to the graduationsthereon, a strap engaging the carrier, means for attachin an end of thestrap to the respective boar member, and means for regulating theeffective length of the stra v Signed at Seattle, gVashington, this 2ndday of'Jufie,1925.'

' JOHN D. GUISS.

